Lithologic Reservoirs ›› 2012, Vol. 24 ›› Issue (1): 57-63.doi: 10.3969/j.issn.1673-8926.2012.01.011

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Characteristics of Oxfordian carbonate reservoir in Agayry area,Amu Darya Basin

LIU Shilei1， ZHENG Rongcai1， YAN Wenquan2， LIAO Jun3， JIANG Hao3， WANG Xiaoping3   

  1. 1. State Key Laboratary of Oil and Gas Reservoir Geology and Exploitation， Chengdu University of Technology， Chengdu 610059，China； 2. Gas Production Training Center， PetroChina Southwest Oil and Gas Field Company， Chongqing 400021， China； 3. Chongqing Gas Mine， PetroChina Southwest Oil and Gas Field Company， Chongqing 400021， China
  • Online:2012-02-20 Published:2012-02-20

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Abstract:

High-yielding industrial gas had been gained in Oxfordian carbonate rocks in Agayry area, Amu Darya Basin, thus a detailed study on the characteristics of the reservoir will be important to guide its hydrocarbon exploration and development. Based on the detailed description of drilling cores and comprehensive analyses of casting thin sections, scanning electronic microscope and reservoir properties, it was believed that the reservoir and its distribution are mainly controlled by sedimentary microfacies and diagenesis. The sandy beach and bioclastic beach are the foundation of the reservoir development, dissolution is the key factor for the reservoir formation, and the fracturing greatly enhanced the reservoir quality. All these features improved the accuracy of the reservoir prediction and evaluation, and provides principles for the efficient development of gas resources.

Key words: seismic facies, sedimentary facies, seismic sedimentology, Sangonghe Formation, Bohu Depression, Yanqi Basin

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